Home / 159,686.28-220,359.60-91,656

Finding the Fourth Proportional to 159,686.28, 220,359.60 and 91,656

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Solution

The fourth proportional to 159,686.28, 220,359.60 and 91,656 is: 126,480.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,686.28 : 220,359.60 = 91,656 : x
  2. Step 2: Convert to fraction form
    159,686.28/220,359.60 = 91,656/x
  3. Step 3: Cross multiply
    159,686.28x = 220,359.60 × 91,656
  4. Step 4: Simplify right side
    159,686.28x = 20,197,279,497.60
  5. Step 5: Solve for x
    x = 20,197,279,497.60/159,686.28
  6. Step 6: Final answer
    x = 126,480.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.